A person jumps odd the top of a building which is 12 metres above ground. She...

A person jumps odd the top of a building which is 12 metres above ground. She is attached to the end of the bungie cord (a big rubber band) that has an unstretched length of 6 metres. The cord stretches until the physics major is stopped 2 metres above the ground. She then bounces back upward and begins oscillating (bouncing up and down). The student's mass is 55kg. Ignore air resistance. a) what is student's total energy after oscillations begin? b) what is spring constant k for bungie cord? c) what is frequency of her oscillation? d) how long does it take her to travel up and down 4 times ( how long does it take her to complete 4 oscillation)? e) what is the amplitude of resulting oscillation? f) what is her maximum speed after the oscillation begins?

Expert Solution

genius_generous answered 1 year ago

A hot-air balloon is initially floating (stationary) a few metres above the ground. The radius of...

A hot-air balloon is initially floating (stationary) a few metres above the ground. The radius of the spherical balloon is 6.25 m, and the density of surrounding air is 1.29 kg m-3. "Ballast" is weight of negligible volume that can be dropped to make the balloon rise. How much weight would you have to drop overboard to make the balloon rise 105 m in 15.0 s? You may assume that the density of surrounding air remains constant.

You launch a projectile horizontally from a building 29.5 m above the ground at another building...

You launch a projectile horizontally from a building 29.5 m above the ground at another building 40.6 m away from the first building. The projectile strikes the second building 14.0 m above the ground. What was the projectile s launch speed? 22.84 m/s 16.56 m/s 24.03 m/s 30.04 m/s

A ball is released from the top of the building and reaches the ground after 5...

A ball is released from the top of the building and reaches the ground after 5 seconds (15 points). a) What is the velocity of the ball when it hits the ground? b) What is the height of the building? c) How much the ball falls in the last 2 seconds of the motion?

A ball is thrown from the top of a building at an angle of 30degrees above...

A ball is thrown from the top of a building at an angle of 30degrees above the horizontal and with an initial speed of 20m/s. if the ball is in flight for 4seconds A) how tall is the building? b)what horizontal distance does the ball travel? c) what maximum height does the ball reach? d)with what speed and angle of impact does the ball land?

Krissy throws a ball from a height of 2.00 m above the ground. She throws the...

Krissy throws a ball from a height of 2.00 m above the ground. She throws the ball with a speed of 3.00 m/s directed 50.0 degrees above the horizontal. Find: a.) the speed of the ball at landing b.) the time it takes the ball to land c.) the angle with which the ball impacts the ground d.) the horizontal range of the ball e.) the maximum height of the ball f.) the time it takes the ball to reach...

A kite 75 ft above the ground moves horizontally at a rate of 12 ft/s. At...

A kite 75 ft above the ground moves horizontally at a rate of 12 ft/s. At what rate in ft/s is the angle between the string (diagonal) and horizontal decreasing when 200 ft of string has been let out?

1) Jason Statham jumps off of a diving board which is 3.0 m above the water...

1) Jason Statham jumps off of a diving board which is 3.0 m above the water surface. He lands traveling at 8.90 m/s at an angle of 75° with respect to the horizontal. (a) What was his initial take-off speed and direction? (b) Use the Order of Magnitude sense-making technique to check the validity of your answer to part (a). 2) An astronaut shipwrecked on a distant planet with unknown characteristics is on top of a cliff, which she wishes...

a projectile is launched from ground level to the top of a cliff which is 95...

a projectile is launched from ground level to the top of a cliff which is 95 m away and 155 m high. If the projectile lands on top of the cliff 7.6 s after it is fired, what was its initial velocity? (Be careful what you assume).

You are standing at a base of a Ferris Wheel which is 4 m above ground...

You are standing at a base of a Ferris Wheel which is 4 m above ground while your friend is riding. The Ferris Wheel is 8m in diameter. Describe how the shape of the sine curve models the distance your friend is to the platform you are on. Identify the function that will model this situation as well as a function that will model the if we measure his distance to the ground. In your explanation use the following terms:...

For the soil profile shown in the figure above of Problem 4, when the water table elevation is raised to the top of the ground surface:

For the soil profile shown in the figure above of Problem 4, when the water table elevation is raised to the top of the ground surface:(a) What is the change in the effective stress at Point A?(b) What will be the consequence of the effective stress change?Assume that the total unit weight of the top soil below the water table will increase 5% from its moist unit weight after raising the water table.

Question